Stop thinking about male with jewel returning flowers (6-2-4)
I believe the answer is:
forget-me-nots
'flowers' is the definition.
(type of flower)
'stop thinking about male with jewel returning' is the wordplay.
'stop thinking about' becomes 'forget' (as in forgetting about something).
'male' becomes 'm' (common abbreviation).
'with' says to put letters next to each other.
'jewel' becomes 'stone' (gem stone).
'returning' says the letters should be written in reverse.
'stone' back-to-front is 'enots'.
'forget'+'m'+'enots'='FORGET-ME-NOTS'
(Another definition for forget-me-nots that I've seen is " Small flowers".)